Burying a child with a deceased person in the same grave

Question:
He says: Honorable Shaykh, may Allah grant you success. A relative of mine was buried, and a small child was buried with him in the same grave. When I asked them about the reason for that, they said that the child would intercede for the one buried with him, even though there are many graves prepared for burial. Is this action permissible?

Answer:
This is an error and this is ignorance. It is not a condition for the child’s intercession that he be buried with the deceased; he will intercede for him even if he is not buried with him. This is from ignorance and from not asking the people of knowledge. This action is not permissible, and more than one person is not to be buried in a grave except in case of dire necessity. In case of dire necessity, there is no harm. As for without dire necessity, every deceased person is buried in a separate grave. This is the Sunnah. Yes.